econ3208 midsem 2011
-1-
THE UNIVERSITY OF NEW SOUTH WALES
SCHOOL OF ECONOMICS
ECON 3208/3291
ECONOMETRIC METHODS
Mid-term exam
SEMESTER 2, 2011
STUDENT NAME: ______________________________________________
STUDENT NUMBER:____________________________________________
TUTORIAL (DAY AND TIME):______________________________________
1. TIME ALLOWED – 1 hour
2. READING TIME – 5 minutes
3. THIS EXAMINATION PAPER HAS 12 PAGES
4. INSTRUCTIONS: ANSWER ALL QUESTIONS ON THE EXAM PAPER.
5. THE MID-TERM EXAM IS WORTH 20% OF THE SEMESTER GRADE.
6. ALL ANSWERS MUST BE WRITTEN IN INK. EXCEPT WHERE THEY ARE EXPRESSLY REQUIRED,
PENCILS MAY BE USED ONLY FOR DRAWING, SKETCHING OR GRAPHICAL WORK
me
SPECIAL INSTRUCTIONS
8. CANDIDATES MAY USE CALCULATORS
nt
7. THIS PAPER MAY NOT BE RETAINED BY THE CANDIDATE
9. STATISTICAL TABLES AND USEFUL EQUATIONS ARE PROVIDED IN THE BACK OF THE EXAM.
Do
cu
10. WHEN PERFORMING OR DESCRIBING A STATISTICAL TEST, MAKE SURE TO STATE THE NULL AND
ALTERNATIVE HYPOTHESES, THE LEVEL OF SIGNIFICANCE, THE TEST STATISTIC AND ITS
DISTRIBUTION UNDER THE NULL, THE DECISION RULE AND, WHEN YOU HAVE ENOUGH
INFORMATION, THE CONCLUSION OF THE TEST.
Th
ink
sw
ap
-2-
Part A. Multiple choice questions
Answer each question by circling one and only one answer. Each question is worth 3 marks
(total 30 marks).
1. When estimating a linear probability model using OLS:
a. The estimators are biased because errors are necessarily heteroskedastic
b. The slope coefficient estimates cannot measure changes in the predicted probability of Y=1
c. The estimators can be asymptotically normally distributed
d. All of the above
2. When internal validity is violated:
a. OLS coefficients no longer measure the partial correlation between the explanatory variable and the dependent variable
b. The population error terms cannot be normally distributed
c. The dependent variable necessarily becomes skewed
d. None of the above
3. Which of the
THE UNIVERSITY OF NEW SOUTH WALES
SCHOOL OF ECONOMICS
ECON 3208/3291
ECONOMETRIC METHODS
Mid-term exam
SEMESTER 2, 2011
STUDENT NAME: ______________________________________________
STUDENT NUMBER:____________________________________________
TUTORIAL (DAY AND TIME):______________________________________
1. TIME ALLOWED – 1 hour
2. READING TIME – 5 minutes
3. THIS EXAMINATION PAPER HAS 12 PAGES
4. INSTRUCTIONS: ANSWER ALL QUESTIONS ON THE EXAM PAPER.
5. THE MID-TERM EXAM IS WORTH 20% OF THE SEMESTER GRADE.
6. ALL ANSWERS MUST BE WRITTEN IN INK. EXCEPT WHERE THEY ARE EXPRESSLY REQUIRED,
PENCILS MAY BE USED ONLY FOR DRAWING, SKETCHING OR GRAPHICAL WORK
me
SPECIAL INSTRUCTIONS
8. CANDIDATES MAY USE CALCULATORS
nt
7. THIS PAPER MAY NOT BE RETAINED BY THE CANDIDATE
9. STATISTICAL TABLES AND USEFUL EQUATIONS ARE PROVIDED IN THE BACK OF THE EXAM.
Do
cu
10. WHEN PERFORMING OR DESCRIBING A STATISTICAL TEST, MAKE SURE TO STATE THE NULL AND
ALTERNATIVE HYPOTHESES, THE LEVEL OF SIGNIFICANCE, THE TEST STATISTIC AND ITS
DISTRIBUTION UNDER THE NULL, THE DECISION RULE AND, WHEN YOU HAVE ENOUGH
INFORMATION, THE CONCLUSION OF THE TEST.
Th
ink
sw
ap
-2-
Part A. Multiple choice questions
Answer each question by circling one and only one answer. Each question is worth 3 marks
(total 30 marks).
1. When estimating a linear probability model using OLS:
a. The estimators are biased because errors are necessarily heteroskedastic
b. The slope coefficient estimates cannot measure changes in the predicted probability of Y=1
c. The estimators can be asymptotically normally distributed
d. All of the above
2. When internal validity is violated:
a. OLS coefficients no longer measure the partial correlation between the explanatory variable and the dependent variable
b. The population error terms cannot be normally distributed
c. The dependent variable necessarily becomes skewed
d. None of the above
3. Which of the